F2C 2 Packs 48-Inch by 36-Inch 1/8"(3MM) Thickness Plastic Floor Office Chair Mat 48" X 36" Clear Protector Office Chair Rug Carpet Floor Computer Desk (Pack of 2-48"x 36") Material: High Quality Eco friendly Durable Clear PVC***[Simple easy to clean] Package Includes: 2 PCS 48"X 36" PVC Mats ;Thickness: 1/8"(3MM); Size: 36"x48"/90 x 120cm Smoothly and constantly rolling and standing of chairs Studded back designed to achieve a strong grip w/no piercing or damaging your carpet backing Ideal for protect your home or office's carpet: Dimples on the back side of the mat& A rectangular lip to cover the carpet under your desk when your chair pushed all the way in.